Earlier quoted context omitted.
I also aspire(d) to be a physics teacher, but I'm pessimistic about it. Things like khan academy already make "teaching" obsolete, imagine pairing that with an GPT93 agent. 24/7 interactive learning.
All the research I've seen around MOOCs and online only learning is that it's pretty tough for people to stick at, and only 5-10% of people ever complete a course. I just can't see that putting people in front of a computer to do this sort of thing is a good strategy for everyone.
but if the cost of doing so is so much less than the in-person experience, then it will become the norm, while the in-person experience becomes relegated to the wealthy like those who can afford private colleges today. And not that many professors will be needed, so good luck!